For the past several months, growing numbers of students around the world have been cutting class — not to play but to protest.

The topic driving them is the same: Earth’s changing climate, as evidenced by increasing wildfires and droughts, rising seas and more extreme weather. As the students see it, governments have not done enough to cut the emissions of greenhouse gases, such as...

From an anchored vantage point in an expanse of the southeastern Bering Sea west of Alaska, Peggy, or mooring M2, had monitored conditions in the water for 25 years. A line of sensors extended down more than 70 meters to where Peggy was tethered to the seafloor, collecting information on temperature, salinity and other properties of the water.

Finding the fish is going to get harder as climate change continues to heat up the world’s oceans. Increasing ocean temperatures over 80 years have reduced the sustainable catch of 124 fish and shellfish species — the amount that can be harvested without doing long-term damage to the populations — by a global average of 4.1 percent, a new study finds.

Which came first: the impact or the eruptions? That question is at the heart of two new studies in the Feb. 22 Science seeking to answer one of the most hotly debated questions in Earth’s geologic history: Whether an asteroid impact or massive volcanism that altered the global climate was mostly to blame for the demise of all nonbird dinosaurs 66 million years ago.

WASHINGTON — Sea level rise, driven by climate change, is causing increased flooding during high tides along much of the U.S. coastline. Though such floods are usually minor, a new study suggests that car traffic patterns could help reveal how floods harm an area’s business revenues.

Tidal flooding events “are not one in a hundred years or one in a thousand years. They’re once a week,”...

Warmer springs and summers could make house flies friskier, spreading diarrhea-causing bacteria to more places. As a result, foodborne Campylobacter infections could increase with climate change, proposes epidemiologist Melanie Cousins of the University of Waterloo in Canada.

Cousins’ computer simulation, still a proof-of-concept version, focuses on how the warm weather surge in house...

Maybe the fourth time’s the charm. On February 9, an international team of scientists is embarking on yet another mission to hunt for ocean life that may have once dwelled in the shadow of a giant iceberg (SN Online: 10/13/17). The scientists, led by researchers at the Alfred Wegener Institute in Bremerhaven, Germany, are headed to the Larsen C ice shelf on the Antarctic Peninsula, where a...

Overall, 2018 was the fourth-warmest year on record, and climate change trends suggest that temperatures will only continue to climb, scientists said February 6 during a joint news conference by the National Oceanic and Atmospheric Administration and NASA.

The agencies’ data show that global atmospheric temperatures in 2018 were on average 0.79 degrees Celsius warmer than the average...

Sea level rise over the next century won’t get a feared boost from Antarctic ice cliffs crumbling into the ocean like dominoes, a new study suggests.

The finding, published February 7 in Nature, is based on a new statistical analysis showing that such a rapid collapse of marine ice cliffs in Antarctica was extremely unlikely to have happened in the past, even during some of Earth’s...

Climate change, extreme weather events and debates over climate mitigation strategies dominated the news for much of the last year. Yet climate scientists continually wrestle with how best to talk about these issues: Should discussions of climate change appeal directly to people’s emotions, whether fear or anger or even hope? Or are data-driven discussions the way to go?